Question: A jar test has been performed on a water sample for coagulation. The optimal pH is 8, and the optimal alum dose is 30 mg/L

A jar test has been performed on a water sample for coagulation. The optimal pH is 8, and the optimal alum dose is 30 mg/L (as alum). The design flow rate is 2 MGD. a. What is the mechanism of coagulation?

b. How much alkalinity will be consumed at this dose, in mg/L as CaCO3?

C. How much alum is required, in kg/day?

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